Merge "Make sure move task to back is handled by shell" into udc-dev am:...

Merge "Make sure move task to back is handled by shell" into udc-dev am: c2970d74 am: df61c52b am: bcb150ae

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23269965



Change-Id: I79fd7bfe6f3f992be17197665e21d8aae368149b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>